Electrical Systems-slo

27 Questions
Electrical Systems-slo

Sample Question

Tech A says an atom with more electrons than protons has an overall positive charge. Tech B says not all atoms can give up or accept electrons easily. Who is correct?

Tech A

Tech B

Both Techs A and B

Neither Tech A nor B

Number of Questions:

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Questions and Answers
  • 1. 
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 2. 
    What materials make a good insulator?
    • A. 

      Copper and aluminum

    • B. 

      Ceramic and plastic

    • C. 

      Both A and B

    • D. 

      None of the above

  • 3. 
    Tech A says a resistor is a component designed to extract energy from the current flow. Tech B says he uses a voltmeter to check for a voltage drop. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 4. 
    Tech A says you must have power supply for a simple circuit to work. Tech B says a switch will interrupt. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 5. 
    Volts, amps, and ohms are the three basic units of electrical measurement.
    • A. 

      True

    • B. 

      False

  • 6. 
    Tech A says AC stands for alternating voltage. Tech B says DC is used in electric motors on most hybrid vehicles. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 7. 
    Tech A says an alternator has to have a transformer and a rectifier is used to produce DC volts. Tech B says you can run an AC motor on DC volts. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 8. 
    Tech A says when you ground a circuit, you hook it back to the positive side of the battery. Tech B says some manufactures use the chassis as a return path to the battery. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 9. 
    Tech A says high resistance causes an increase in current flow. Tech B says a voltage drop is another name for high resistance. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 10. 
    Electrochemical energy is produced when:
    • A. 

      The sun shines on photocells.

    • B. 

      The steam builds.

    • C. 

      When two dissimilar metals are heated.

    • D. 

      Two dissimilar metals are immersed in an acidic liquid.

  • 11. 
    Ohm's law tells us that it takes 1 volt to push 1 amp through how many ohms?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 12. 
    In calculating ohm's law:
    • A. 

      R stands for resistance.

    • B. 

      A stands for amps.

    • C. 

      V stands for voltage.

    • D. 

      All of the above

  • 13. 
    You have a 4 ohm resister and the battery is charged to 12 volts. How many amps will flow in the circuit?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 14. 
    How many paths are there in a series circuit?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 15. 
    Tech A says parallel circuits are like links in a chain. Tech B says total current in a parallel circuit equals the sum of the current flowing in each branch of the circuit. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 16. 
    Tech A says in a parallel circuit, the more branches that are added, the more current flow increases. Tech B says a series-parallel circuit is made of parallel circuits only. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 17. 
    A switch is used to:
    • A. 

      Protect a circuit.

    • B. 

      Allow current to flow only one way.

    • C. 

      Reduce the current flow.

    • D. 

      Turn current flow on and off.

  • 18. 
    Tech A says relays are turned on and off by a small amount of current. Tech B says there are two types of relays: normally closed (NC) and normally open (NO) types. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 19. 
    Tech A says a solenoid is not used on modern automobiles. Tech B says fuel injectors and starter motor solenoids are two of many solenoids used on modern automobiles. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 20. 
    What are the three types of resistors?
    • A. 

      Rheostats, potentiometers, thermistors

    • B. 

      Fixed, fluid, thermistors

    • C. 

      Round, square, triangle

    • D. 

      Thermistors, negative temperature coefficient (NTC) thermistor resistance, positive temperature coefficient (PTC) thermistor resistance

  • 21. 
    Tech A says wire size is very important. Tech B says there are two scales used to measure wire size. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 22. 
    Tech A says copper has a low resistance. Tech B says the length of wire doesn't affect resistance. Who is correct?
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 23. 
    • A. 

      Tech A

    • B. 

      Tech B

    • C. 

      Both Techs A and B

    • D. 

      Neither Tech A nor B

  • 24. 
    Controlled area network bus (CAN-bus) systems carry:
    • A. 

      Children.

    • B. 

      High-speed data.

    • C. 

      Very slow data.

    • D. 

      Info for the cruise control.

  • 25. 
    Controlled area network bus (CAN-bus) systems should be checked using a(n):
    • A. 

      Power probe

    • B. 

      Analog meter

    • C. 

      Test light

    • D. 

      Digital multimeter

  • 26. 
    All of the following could cause a slow cranking condition EXCEPT:
    • A. 

      Over-advanced ignition timing

    • B. 

      Shorted neutral safety switch

    • C. 

      Misaligned starter mounting

    • D. 

      Low battery state of charge

  • 27. 
    During an output test using the full field method, a 100 ampere alternator with an integral regulator produces 60 amps. The cause of the low alternator output could be a(n):
    • A. 

      Shorted diode in the alternator

    • B. 

      Broken brush lead wire in the alternator

    • C. 

      Open circuit in the voltage regulator

    • D. 

      Defective alternator capacitor